cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A327765 a(n) is the trace of the n-th power of the 2 X 2 matrix [1 2; 3 4].

Table of values

n a(n)
0 2
1 5
2 29
3 155
4 833
5 4475
6 24041
7 129155
8 693857
9 3727595
10 20025689
11 107583635
12 577969553
13 3105015035
14 16681014281
15 89615101475
16 481437535937
17 2586417882635
18 13894964485049
19 74647658190515
20 401028219922673
21 2154436415994395
22 11574238519817321
23 62180065431075395

List of values

[2, 5, 29, 155, 833, 4475, 24041, 129155, 693857, 3727595, 20025689, 107583635, 577969553, 3105015035, 16681014281, 89615101475, 481437535937, 2586417882635, 13894964485049, 74647658190515, 401028219922673, 2154436415994395, 11574238519817321, 62180065431075395]